Head-motion for nailing-machines.



E. C. NORTHRUP.

HEAD MOTION FOR NAILING MACHINES.

APPLICATION FILED MAYZB. I915.

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EfC. NORTHRUP. HEAD MOTION FOR MAILING MACHINES.

APPLICATION FILED MAY.28,19I5.

Patented. Jan. 30, 1917.

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ELIE/TEE. C. NORTHRUP, OF SAN FRANGISCO, CALIFORNIA, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 SAVINGS UNION BANK AND TRUST COMPANY, OF SAN FRANCISCO, CALL FORNIA, A CORPORATION OF CALIFORNIA.

HEAD-MOTION FOB, NAILING-HLACHIHES.

Specification of Letters Patent.

Patented Jan. 36, 1917..

I Application filed May 28, 1915. Serial No. 30,985.

To all whom it may concern:

Be it known that T, ELMER C. NORTHRUP, a citizen of the United States, residing at San Francisco, inthe county of San Francisco, State of California, have invented a new and useful Head-Motion for Nailing- Machines, of which the following is a specification in such full and clear terms as will enable those skilled in the art to construct and use the same.

This invention relates to a head motion for nailing machines and its object is to produce a head motion which will be quick acting and which will have the head operated from the driving links so positioned with respect to said links as to bring the thrusts of the nailing operations as nearly as possible in line with said links without obstructing the table upon Which the boxes are nailed.

An embodiment of the invention is shown in the drawing in which the same reference numeral is applied to the same portion throughout, but I am aware that there may be many modifications thereof.

Figure 1 is a side elevation of the frame of the machine, Fig. 2 is a front elevation of the frame shown in Fig. 1, Fig. 3 is a sectional plan view of the frame of the machine showing the slidable head, and Fig. 4 is a back elevation partly in section of the slidable drivinghead and the upper portion of the frame of the machine.

The numeral 1 represents the base of the machine, said base having posts 2 and 3 extending upwardly therefrom, which posts are provided with guide flanges 4, 5 for the table 6 and with inclined guide flanges 7 S for the slidable driving head 9. The table 6 is provided with a screw 10, which screw is raised and lowered by means of the hand wheel 11 supported on the hollow post 12, which post is carried by the base 1.

The slidable head 9 has plates 13, 14 bolted thereto, which plates hold it in position to eliect the nailing operations and the flanges of the head to which said plates are bolted are tapered as indicated at 15, 16, 17, and 18 to allow the driving head to wobble slightly to provide for boxes which may not be out exactly true. The slidable head 9 has pins 20, 21 at its opposite ends in front of the inclined flanges 7 and 8, which.

pins are connected with stirrups 22, 28, said stirrups being slidably connected with rods 24, 25 which extend to the crank pins 26, 27, the pin 26 being carried by the crank 28 and the pin 27 being carried by the driver gear 29.. Each rod is provided with a heavy buffer spring 30 as indicated in Fig. 1 in order to provide means whereby boxes of different thickness may be operated upon without injuring the boxes or break the machine, the total thickness of the materials composing said boxes varying from an eighth to a half inch.

The slidable head 9 is provided with two slots 34, extending vertically therethrough and it is provided with a clovetailed groove 36 in its underside, which groove supports the adjustable driver heads 87, 38. The driver heads are adjustable laterally of the machine through the medium of the rod 39, said rod having a hand wheel 40 and carrying right and left screws for the adjustment of the driver heads The rod 39 passes through a bracket 41 on the end of the slidable'head 9, which bracket holds said rod in its proper place, a collar 42 being provided for that purpose.

When the given adjustment of the driver heads has been effected they are rigidly secured in an adjustment by means of the bolts 43, said bolts having hand nuts 45, 4-6 to tighten them in the given adjustment. The driver heads 38, 39 are provided with enlarged portions 47, 48, 49, through which enlarged members the rods 51, 52, 53 and 54 pass, the object being to provide the necessary throw of the driver heads with respect to the chuck holding members 55, 56 carried by the lower ends of the rods 51 to 54 inclusive so as to allow the nails to fall into the chucks below the nail drivers 57. Each of the nail drivers consists of a steel rod 57 and a head 58' secured thereto, which head is movable longitudinally in a slot in the underside of the ad justable driver heads 37, 38.

The chucks 60 may be of any well known type of nail holding chuck having the nail receiving hopper 61 and lug 62 for adjustment purposes to the front and rear of the chuck holding members 55, 56. While in Fig. 1 but two chucks are illustrated at each side of the machine it will be obvious that the machine may have any desired number of chucks, it depending upon the size of the box to be nailed.

In operation the gear 29 is driven from any suitable source of power and upon each rotation thereof a set of nails is driven from the chucks into the box placed upon the table 6.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United States, is as follows, modifications within the scope of the claims being expressly reserved:

1. The combination of a frame, inclined guides near the top of said frames, a slidable head on said guides, arms carried by said slidable head and adjustable transversely thereof, a plurality of nail chucks and nail drivers carried by said arms, and links carried by the slidable head and pivoted thereto in front of the guides on which it is slidable.

2. The combination of a frame having inclined guides at the upper end thereof, a head slidable on said guides, arms supported by said slidable head and adjustable transversely thereof, links pivoted to said slidable head in a plane in front of the guides on Which it is movable, nail chucks and nail drivers carried by said arms, and a crank shaft to which said links are connected and which delivers the thrusts to the slidable head in a plane approximately parallel to the line of motion of said head.

3. A nailing machine comprising the combin ation with a frame having inclined guides in its upper end, of a slidable head thereon mounted so that it may rock in a plane parallel to the guides, links connected to said slidable head, springs to deliver the thrust of said links to the slidable head whereby one side may move more than the other side, and adjustable arms carried by the slidable head for the support of nail chucks and nail drivers.

4. A nail machine comprising a frame having inclined guides at the upper portion thereof, a slidable head carried by said guides and mounted so that it may rock in a plane parallel to the guides, resilient links connected with said slidable head for rais ing and lowering it, transversely movable arms carried by the slidable head, bolts for fixing tWo of said arms in a given adjust-- ment with respect to said slidable head, and nail chucks and nail drivers carried by the arms.

5. A nailing machine comprising a frame, inclined guides at the upper end thereof, a slidable head carried by the guides and mounted so that it may move more at one end than the other in a plane parallel to the guides, laterally movable arms carried by the slidable head, means to adjust said arms, means to secure them in a given :uljustmeut with respect to said slidable head, a second pair of arms supported by the first arms and movable with respect thereto, nail chucks carried by the second arms, and nail drivers carried by the first set of transversely adjustable arms.

6. A nailing machine comprising a frame having inclined guides at its upper end, slidable head on said guides, resilient links connected with the ends of said head in front of the guides for raising and lowering the head, transversely extendingarms carried by the slidable head and :uljustable transversely of the frame, means to elleet said adjustment of the arms, means to secure them in a given adjustment, another set of arms supported by the first arms and movable vertically with respect thereto, nail chucks carried by the second arms, and nail drivers carried by the first arms.

7. A nailing machine comprising a frame having inclined guides at its upper portion, a head slidable on said guides, pivot pins extending laterally from said head and in front of the guides, arms adjustable transversely of the head and carried thereby, nail drivers carried by said arms, other arms connected with the first arms and movable vertically with respect thereto, nail chucks ear ried by the second arms, and resilient links connected with the pivot pins of the head for raising and lowering the same, the arrangement being such that the thrust on the nail drivers will be substantially in line with the longitudinal axes of said links.

In testimony whereof I have hereunto set my hand this 18th day of lllay A. l). 1915. in the presence of the two subscribed witnesses.

ELMER C. NORTHRUP.

lVitnesses C. P. GRIFFIN, L. H. ANDERSON.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

